However, since the hunt for him began, it has been suggested he may have stolen the identity of another Ali Qazimaj in Kosovo.

It has also been suggested he has a connection with an area near Tirana in Albania.

Detectives have declined to comment on these reports, or whether there were any traces of Mrs Stuart in Qazimaj’s Citroen.

The last sighting of Mr and Mrs Stuart was at Goodies Farm Shop in Pulham Market, Norfolk, on the morning of Sunday, May 29.

Yesterday police said they will broaden the search to find Mrs Stuart over the next few days, as well as possible stopping places en route to Essex. They have previously said Qazimaj travelled to Weybread and then back through Essex to Kent.

However, they have not given a timescale for the journey.

Detective Chief Superintendent Simon Parke, of Suffolk Police, said: “After carrying out work in the vicinity of the couple’s Weybread home, and at other locations linked to the enquiry, we are now expanding the search for Sylvia between Suffolk and Essex.”

A 61-year-old Leicester man, thought to be the couple’s son-in-law Steve Paxman, was arrested in connection with the murder on June 5.

He was bailed on Monday to return on August 3.

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